Peter: If you have a pedestle type sump pump, there may be room in the sump for a redundent pump installation. If the first one fails, the second one will take over. If the second pumpis wired properly, it can be made to ring a bell or flash a light indicating the number one pump has some how been compromised. This will give you an extra measure of protection against flooding.Lots of luck.......Bud

How often should I replace my sump pump: every 3 years, every 5 years, etc.?

: The reason I am asking this question is that I want to prevent basement flooding by replacing the sump pump before it fails.